Technoblogy – Push-Button On/Off Switches

Push-button on/off switch using complementary MOSFETs.It’s taken from the excellent book The Art of Electronics [2], and like the CMOS version it draws no current when the switch is off, because both MOSFETs are in a non-conducting state.As before, to drive more than 100mA replace the p-channel MOSFET at the output with a power one, such as the NDP6020.